Action Comics ##340

DC ComicsAction Comics Vol. 1

Action Comics

Writer

Jim Shooter

Interior Artist

Al Plastino

Cover Artist

Wayne Boring

Publication Date

August 1966

Cover Variant

Regular

Printing

First Printing

Comic Description

This issue features the first appearance of the Parasite (Raymond Maxwell Jensen), a classic Superman villain who absorbs life energy and powers. The story 'The Power of the Parasite!' shows Jensen being transformed by radioactive waste into the purple-skinned menace.

Condition & Value

Condition Grade

Good/Very Good (CGC 3.0)

Condition Details

Visible spine split at the bottom left, heavy spine stress with color breaking, rounded corners, minor foxing/staining on the left edge, and general surface wear. Small pen mark in the word 'Parasite' on the cover.

Estimated Market Value

Raw: $40 - $70 | Graded (3.0): $120 - $150

Recent Sales

Recent sales for mid-to-high grade copies vary significantly; however, 3.0-4.0 range copies have sold between $50 and $90 raw in 2023. Graded 9.0+ copies reach over $1,500.

Grading Recommendation

Not recommended for grading unless sentimental. The cost of CGC/CBCS grading plus shipping would exceed the current market value of the book in its present 3.0 condition.

Notable Features

Major Key Issue: 1st Appearance of the Parasite. Also includes a 'double-page pin-up of Superman' which must be present for the book to be considered complete.

Authentication Notes

Authentic 1966 Silver Age print. 12-cent cover price is correct. Patina and paper oxidation are consistent with the era and storage condition shown.

Scanned on 6/4/2026
Action Comics ##340 - DC Comics | Comic Book Scanner